SOLUTION: A silversmith mixed 45g of a 70% silver alloy with 40g of a 25% silver alloy. What is the percent concentration of the resulting ally? Round your answer to one decimal place

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Question 901488: A silversmith mixed 45g of a 70% silver alloy with 40g of a 25% silver alloy. What is the percent concentration of the resulting ally? Round your answer to one decimal place
Found 3 solutions by josgarithmetic, richwmiller, MathTherapy:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
howmuchsilver%2Fhowmuchalloy and then multiply by 100.

%2870%2A45%2B25%2A40%29%2F%2845%2B40%29, the multiplying already taken care, direct percents used.

cross%28highlight%2837.2%29%29 %2848.8%29 Percent.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.70*45+.25*40=x(45+40)
.70*45+.25*40=x(85)
31.5+10=85x
41.5=85x
x=41.5/85
x=0.488=48.8%


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

A silversmith mixed 45g of a 70% silver alloy with 40g of a 25% silver alloy. What is the percent concentration of the resulting ally? Round your answer to one decimal place


Resultant percentage concentration: .488235 ≈ highlight_green%2848.8%29

You can do the check!! 



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